Vacuum tank for motor vehicles



- v y 1,639,254 Allg- 16 19?@7- fr. BossARD lVAGUUII TANK YFOR MOTOR VEHICLES Filed Fehn.. 1927 2 sheets-'sheet 1 a@ Q. maan@ akmus,

Aug. 16, 1927.

T. vBossARlz VACUUM TANK FOR MOTOR VEHICLES 1Filed Fehn. 1927 2 sheets-sham.A 2

' for Patented Aug. 16.7, 1927.

UNITED STATES THEODQRE IBOSSARD, OF SALT LAKE CITY,

insana UTAH, ASSIGNOR TO NATIONAL ERODUCTS INCORPORATED.-

VACUUM TANK ron MOTOR VEHICLES.

y Application filed February 7, 1927. Serial No. 166,466.

My invention relates to automobiles and has for its object to provide a new and efficient vacuum tank with which to supply fuel to the carburetor of the engine.

A further object is to provide a vacuum tank which will operate under low and high suction lfrom the intake manifold of the en fune. t o A still further object is to provide a vacuuin .tank which will supply the fuelfrom the tank `to the carburetor of the engine without loss of fuelor power to the engine andl with yhigh efficiency and economically.

A still further-.object is to provide anecovnomically :constructed vacuum tank for internal/combustion engines which is efficient and vwhich has no springs to weaken or brealnandwhich will .be fool-proof.

These objects I accomplish with ythe Vde vice illustrated in the accompanying draw-v ingsin which similar numerals and letters.

ofreference indicate 'like `parts throughout the several views and as .described in the specification .forming a. .part of .this .application and .pointed out .in the ,appended claims.

In the drawings in which I have shown the best and most preferred manner of building'my invention Figure 1 aside elevation of fthe tank. Figure 2 is ,a Vertical ldiametrical section of the tank. Figure Bis @plan/view of the top ofthe tank. Figure 4l is a .plan View of the tank with the topremoved and parts sectioned. Figure 5 isa vertical diametrical section of the tank with Vthe inner working Yparts shown in elevation. Figure 6 is apartial sectionof the centrally located ioat stem. .Figure 7 is a plan .view of theair valve control ,plate. Figure '8 is a side elevation of the saine. Figure 9 is a sideview of the float and valve control fork. :Figure 10 is a Vplan view of the saine. yAnd Figure11 is a. side elevation of the outlet valve and stein. 4

In the ,drawings I have shown the cylindrical casingon which my vacuum tank is formed as A, having a closure plate B screwed into the lower end thereof, and with anauxiliary` tank C screwed onto the bottom of -said plate B. Anoutlet elbow .l is screwed into the lower endof the tank C to carry the Vgasoline to the carburetor ofthe engine a-nd an inletpipe is connectedto the elbow :2, which elbow is screwed into the cover overfthe top of thetank A, andwhich carriesthegasoline froin the supply tank to the vacuum tank by the suction created in the vacuum tank. Y rlhe said tank A is closed on the top by a.y cover plate 3, which has a centrally disposed raised cylinder portion l on the top thereof and another raised cylindrical portion 5 near one edge thereof. The

said cylinder l is hollow and has an inter-v nal centrally disposed threaded hole 4a in thetop thereof by which the entirev cap is held in place on the vacuum tank. Arod 6 is lscrewed into the top of the plate 'B and into the hole lato hold the tank together, and the said rod isalso used to support and hold the float -F uprioht inthe tank. A slot 7 is cut longitudinally in the said rod 6 and khas a Vcatch bar S pivoted therein by the pin 9,and the said bar 8 is yheld in normal position with a ycatch lug'lO protruding from within the slot on the top side of the bar 8, by `the spring 11. The other end` of the said bar 8 is formed with an extend` ed lug 1Q, thereon7 which lug is adapted to be moved into the slot 7 by the lower edge of the float F coming into contact with its upper portion. lVhen the bar 8 is thus inoved the lug 10 is drawn into the slot, but the minute that thev float is raised the spring 11, pressing v below the pivot point of the bar, `again forces it into its normal position. The 'lioat F is made of cork or other suit-y ableffloat material and has metal spool portion 'F1 centrally therethrough, which portion rests against Athe rod G. Another' spool is also carriedon the said-rodl 6 above the lfloat F and said spool has' enlargedends which engage with afbifurcated lever arm 14. l

Ihebore through the said spool 15 is rcstricted at its upper end and the restricted portion 13 is `that portion Awhich is caught by the lug lOholding the spool 15 up onthe said rod 6 when rthe fioat is slowly falling with the outflow of gasoline from the float chamber to the auxiliary tankC. lvl/*houille float rests upon the lug 12 the spool. is released by the movement of thebar S andit falls downwardly untiithe 'lever arm la' moved'to its lowest downward position and the spool 15 is then held by resting upon the top side of `,said arn'i. The said lever arm .14 is pivotedonthe pivot `pin 19 between the ylugs 17. Another lever arm 20 is ,fulcrurned on the samepivot pin 19 an-'l is between the bifurcated legsof 'the arm 142,

as shown in Figure 4. @ne end 2()a of the said lever arm 20 is bent at right angles to the ulcrumed portion of said arm and rests with its upper flat lace upon the under side of the arm 14E. rlhe other end of the said lever arm 2() is biturcated and the upper face of the biturcated portions 21 and 22 are held by a collar 23 ot' the outlet control valve stem 24k in suspension thereon. The lower end ot the said control valve 24C is passed through an outlet hole 25 in the plate ll and the lower edge of the said hole is chamered to form a valve seat. 26. The said valve stem 24e has a valve head 27 'formed thereon which seats in the seat 26 when the outlet is shut olf, and which valve head controls the flow of gasoline from the float chamber to the tank C. The upper portion of the va'lve stem 24 is longitudinally movable within a guide hole 28 bored in the cylindrical portion 5 of the cap 3. A suction pipe 29 is screwed into a hole 30 bored in the top of the portion 5 of the cap -3 and a suction hole 31 is bored through the cylindrical portion 5 connecting the suction pipe withV a valve seat 32. The seat 32 is closed by a va'lve 33, which valve is carried in the hole 34C bored in the said. portion 5, and the said valve 33 has a va'lve stem 35 thereon which stem opens or closes the valve 33 in its seat 32 by movement actuated by the lever arm 1A. The lower end of the said stem 35 is flattened and is pivoted to the said arm lfl by the pin36, so that the valve 33 closes and opens the hole 31 by the movement oil the lever arm 14k and the spool 15. Another valve stem 37 is carried upon the top side o' the portion 2OCL of the lever arm 20. This valve stem has a valve head 38 formed on the upper end thereof and which head seats in a valve seat 39 chamfered in the top oi" an air hole ll() bored into the portion 5. The said hole lO is in open connection with the outer air .by the side cut 4l in the portion 5 and the said valve 38 opens and closes the air supp'ly to the interior of the said vacuum tank.

The operation of my device is as follows:

The vacuum tank is connected with the carburetor by a pipe to the elbow 1 and to the gasoline tank by a pipe connecting the tank with the elbow 2. The intake manitold of the engine is then connected with the pipe 29 and the device is ready to operate. Then the engine is rotated the suction caused by drawing the gases from the carbureter into the cylinders of the engine is used to create a vacuum suction within the tank A and as the suction of air through the pipe 29, the hole 31 and around Vthe valve 33 sucks all of the air from the tank A and then draws the gasoline into the tank A through the elbow 2 from the supply tank. At the time when the suction is drawing` gasoline into the tank the valve 27 is closed and there is no gasoline leaving the tank to the auxiliary tank, and the valve 38 is also closed so that no air can enter the tank. As the gasoline enters the tank it floats the float F and starts it to rise. As the float rises, it also raises the'spool 15 which actuates the lever arm 1li and moves it upwardly, thereby opening the air valve 38, closing the suction va'lve 33 in its seat 32, and opening the outlet valve 27 trom its seat 26, thereby allowing gasoline to flow from the tank into the auxiliary tank C, and from there to the carburetor vot the engine. lWhen the float has reached this point the suction is thus shut o' and there is no more gasoline drawn into the vacuum tank. The supply in the auxiliary tank is used to provide uel 'for the engine and as this supply is used the gasoline flows from the tank A through the hole 25 and the float begins to slowly lower as the gasoline is drawn out of the tank. The dog 10 holds the spool 15 suspended on the rod 6 until the lioat moves the lug 12 and causes the spool 15 to drop. As the spool drops it lowers the lever arm 1a and opens the suction valve 33, closes the air valve 38, and closes the outlet valve 27. rlhe engine is kept running by the supply in the tank C until the vacuum tank is again iilled up by the suction from the intake manifold. An air line pipe la is provided .in one side ot' the tank A, in open connection with the tank C and the open air so that gasoline may be drawn from the said tank C and air allowed to enter to prevent any tendency to vacuum in the lower tank and so that the gasoline will flow therefrom freely.

Having thus described my invention I desire to secure by Letters ljatent and claim 1. In a vacuum tank for automotive vehicles the combination ot a casing, having two compartments therein connected by a valve-controlled opening; a oat in the top compartment adapted to be raised and lowered by the level oi: the gasoline in said compartment; a rod on which said float is operated; a spring-operated catch in said rod; a spool carried on said rod above said iioat; a biturcated pivoted lever arm having the free ends engaging with the edges of said spool and said lever being actuated by the movement ot said spool and indirectly by the movement ot said float; a valve in the opening between the two compartments; another lever arm mounted between the arms ot the first-mentioned lever arm and pivoted on the same pivot pin, said arm adapted to open and close said valve between the two compartments; an air valve operated by the other end o' said last-mentioned'lever arm, adapted to `open and close an air port into the interior of said top compartment; and a suction control valve operated by said firstmentioned lever arm to control the suction in said upper tank created by the intake manifold of the vehicle.

2. In a vacuum tank the combination of a easing; an auxiliary easingv thereb'elow; a rod mounted between the ends of said oasing, having a catch therein; a float movable on said rod; a spool Carried on said rod above said iioat adapted to be caughtand held by the catch in said rod, until the oas- 10 ing is partially emptied and the float is 10W- ered suioiently to aetuate the catch and relea-se said spool; and Valves cont-rolled by said spool adapted to control the suction, the air release and the gasoline supply to and from said easing` as necessary for the operation of said tank.

In testimony whereof I have aiiiXed my signature.

THEODORE BOSSARD 

